Mounting for dual wheels



Nov? 1945- E. v. GARNETT ETAL MOUNTING FOR DUAL WHEELS Original, Filed May 27, 1940 INVENTOR. EDWARD 1 GAR/V677 BY VACTOR G. GA/PNL'TT A TTOR/VZ).

Patented Nov. 6, 1945 UNITED; sT-Ar lVIOlJNTING FOR DUAL WHEELS Edwar v. Game and Vactor G. Garnett, f J DenvenColo.

Original application May 27, 1940, Serial No. 1 337,482; Di-videdand this application October 11,1944; Serial No. 558,164

" 'v'c ims. 1 (c1.1ss 1s):

This invention relates to a dual wheel mounting for vehicles of the type illustrated in app1i-' cants U. S. Patent No. 2,345,192, of which this application is a division. of the invention resides in the provision of a simple and highly efiicientconstruction which will employ standard parts andwhich will allow one of the dual wheels to move-differentially of the other wheel. a

Another object of the invention is to provide l u a construction of this character in which the two wheels will be independently braked by means of a single brake mechanism. 1

A further I object is to a so construct the device,

that the wheels can be quickly and easily -removed without disturbing the brake mechanism and without disturbing themountings of the wheels or their bearings.

The principal object,

- Other objects and advantages reside in the dew;

tail construction of the-invention, whichgisdesigned for simplicity, economy, and efilciency. These will become more apparent from the following description- 4 In the following detailed description of .the invention, reference is had to the -accompanying drawingwhich forms a parthereof. Like-numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing:

Fig. 1 is a vertical section through a pairof dual wheels with the principles of the invention applied thereto; and j Fi 2 is a cross section taken on the line 2-2, Fi 1, with the tires omitted.

In Fig. 1, the outer tire of a dual wheel is illustrated at It, the inner tire at H, the outer wheel rim at I2, inner Wheel rim at l3, axle at M, and axle spindle at IS.

The improved dual wheel mounting employs a hub member l6 mounted upon suitable wheel bearings upon the spindle M. The bearings and the spindle may be of the standard type used at present on dual wheels. The bearings and the hub member l6 are locked in place by means of a single retaining nut l8 and may be sealed by means of the usual hub cap (not shown).

The hub member I6 is formed with an annular projecting wheel flange l9 through which standard wheel bolts project. A first brake drum 2| is secured to the inner face of the flange l9 by means of the bolts 20. An inner wheel disc 22 and an outer disc wheel 23 are secured in place on the outer face of the flange 2| by means of the bolts 20, there being an inner nut 24 clamped against the wheel disc 22 and an outer the disc 22 by means of suitable bolts 21. inner wheel member 28, to which the inner rim nut 25, threaded the inner nut and clamped against the outer disc wheel 23 as is usual in :dual wheel construction. The wheel 23 and its rim I2 are of the standard pressed steel variety ,used on trucks and the like.

The peripheral edge. of the Wheel disc 22 is dished to form one side of an annular V-shaped channel about the axis of the spindle M. The

other side of the channel is closed by means ,of an annular bearing'ring ,2'6which is secured to An I3 is secured, is formed with a wedge-shaped,

.annular bearing surface which rides concentrically about the axisof the spindle inthe V-shaped channel. A suitable V-shaped. annular bearing bushing 29 is interposed between the bearing surface of the inner wheel member ZB and the channel between the inner wheel disc 22 and, the ring 26 to provide a suitable friction surface.

It can be readily seenthat either tire ID or ill can be rotated aboutits axis independently of the other, the differential being takenv up by friction in the V-shaped bearing channel between the. wheels. It can also be seen that the road thrustof the .axle. spindle l5 isequally distributed to both tires from ,a point intermediate the bearings I! so that a desirable central load thrust is obtained without the twisting strains of the usual one-sided cantilever mounting.

An inner brakev drum 3 0 is mounted in alignment with the 'first brake drum ZI. The inner brake drum is supported from a telescoping'band 3| about the first drum 2|. This band is formed with clutching lugs 32 at spaced points about its periphery which engage in notches 33 formed in the inner wheel disc 22. The lugs cause the inneil'lbrake drum 30 to rotate with the inner tire A single set of brake shoes 34 is mounted within the drums 2| and 30 so as to overlap both drums. The brake shoes are actuated by any of the usual mechanical or hydraulic mechanisms, indicated at 35, mounted on a brake d sc 36. The brake disc 36 is, in turn, mounted on the axle M such as indicated at 31.

It will be noted that the outer wheel can be easily removed and replaced by simply removing the nuts 25 and that the inner wheel can be similarly removed by removing the inner nuts 24. Removal of the wheels does not disturb the brake mechanism as the inner wheel simply slides from the lugs 32 as it is withdrawn. Access may be had to the brake mechanism by removal of the retaining nut l8 and the hub member l6.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claims, without departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured by Letters Patent 1. A dual wheel construction for vehicles comprising: a hub member; hearings in said hub member for journalling the latter on an axle spindle; a first dual wheel secured to said hub member; a wheel disc secured to said hub member; an annular bearing on said wheel disc; a second dual wheel mounted on said annular bearing so as to be independently rotatable from said first wheel; and braking means for exerting a frictional retarding action on both wheels simu1- taneously.

2. A dual Wheel construction for vehicles comprising: a hub member; bearings in said hub member for journalling the latter on an axle spindle; a flange projecting from and surround-- ing said hub member; an inner wheel disc detachably secured on the outer face of said flange; an outer wheel detachably secured on the outer face 01 said inner wheel disc; and an inner wheel rotatably mounted on said inner wheel disc.

3. A dual wheel construction for vehicles comprising: a hub member; bearings in said hub member for journalling the latter on an axle spindle; a flange projecting from and surrounding said hub member; an inner wheel disc detachably secured on the outer face of said flange; an outer wheel detachably secured on the outer face of said inner wheel disc;-an inner wheel rotatably mounted on said inner wheel dis and a removable retaining member maintaining said inner wheel in place on said inner wheel disc.

4. A dual wheel construction for vehicles comprising: a hub member; bearings in said hub member for joumalling the latter on an axle spindle; a flange projecting from and surrounding said hub member; an inner wheel disc detachably secured in the outer face of said flange; an outer wheel detachably secured on the outer face of said inner wheel disc; an inner wheel rotatably mounted on said inner wheel disc; a brake drum'secured on the inner face of said flange; and means for exerting a retarding action on said brake drum.

5. A dual wheel construction for vehicles comprising: a hub member; bearings in said hub member for journalling the latter on an axle spindle; a flange projecting from and surrounding said hub member; an inner wheel disc detachably secured on the outer face of said flange; an outer wheel detachably secured on the outer face of said inner wheel disc; an inner wheel rotatably mounted on said inner wheel disc; a first brake drum secured on the inner face of said flange; a second brake drum positioned in alignment with the inner edge of said first brake drum; means on said inner wheel for engaging said second drum when said wheels are in place; and means for exerting a retardin action on both drums simultaneously.

6. A dual wheel construction for vehicles comprising: a hub member; bearings in said hub member for journalling the latter on an axle spindle; a flange projecting from and surrounding said hub member; an inner wheel disc detachably secured on the outer face of said flange; an outer Wheel detachably secured on the outer face of said inner wheel disc; an inner Wheel rotatably mounted on said inner wheel disc; a first brake drum secured on the inner face of said flange; a second brake drum; means for supporting said second brake drum in alignment with the inner edge of said first brake drum and independently rotatable in relation to the latter; means on said inner wheel for detachably connecting said second drum thereto when the wheels are placed in position; and means for exerting a retarding action on both drums.

'7. A dual wheel construction for vehicles comprising: a hub member; bearings in said hub member for journalling the latter on an axle spindle; a flange projecting from and surrounding said hub member; an inner wheel disc detachably secured on the outer face of said flange; an outer wheel detachably secured on the outer 40 face of said inner wheel disc; an inner wheel rotatably mounted on said inner wheel disc; a first brake drum secured on the inner face of said flange; a second brake drum; means for supporting said second brake drum in alignment with the inner edge of said first brake drum 4 EDWARD V. GARNETT. VACTOR G. GARNETT. 

